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<a href="fluid__surface__inner_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/* -------------------------------------------------------------------------*</span></div><div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment">*                               SPHinXsys                                   *</span></div><div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment">* --------------------------------------------------------------------------*</span></div><div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment">* SPHinXsys (pronunciation: s&#39;finksis) is an acronym from Smoothed Particle *</span></div><div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment">* Hydrodynamics for industrial compleX systems. It provides C++ APIs for    *</span></div><div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment">* physical accurate simulation and aims to model coupled industrial dynamic *</span></div><div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment">* systems including fluid, solid, multi-body dynamics and beyond with SPH   *</span></div><div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment">* (smoothed particle hydrodynamics), a meshless computational method using  *</span></div><div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment">* particle discretization.                                                  *</span></div><div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment">*                                                                           *</span></div><div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment">* SPHinXsys is partially funded by German Research Foundation               *</span></div><div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment">* (Deutsche Forschungsgemeinschaft) DFG HU1527/6-1, HU1527/10-1             *</span></div><div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment">* and HU1527/12-1.                                                          *</span></div><div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment">*                                                                           *</span></div><div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment">* Portions copyright (c) 2017-2020 Technical University of Munich and       *</span></div><div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="comment">* the authors&#39; affiliations.                                                *</span></div><div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="comment">*                                                                           *</span></div><div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="comment">* Licensed under the Apache License, Version 2.0 (the &quot;License&quot;); you may   *</span></div><div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="comment">* not use this file except in compliance with the License. You may obtain a *</span></div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="comment">* copy of the License at http://www.apache.org/licenses/LICENSE-2.0.        *</span></div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="comment">*                                                                           *</span></div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="comment">* --------------------------------------------------------------------------*/</span></div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="preprocessor">#ifndef FLUID_SURFACE_INNER_H</span></div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="preprocessor">#define FLUID_SURFACE_INNER_H</span></div><div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;</div><div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="fluid__dynamics__inner_8hpp.html">fluid_dynamics_inner.hpp</a>&quot;</span></div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;</div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespace_s_p_h.html">SPH</a></div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;{</div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;    <span class="keyword">namespace </span>fluid_dynamics</div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;    {</div><div class="line"><a name="l00046"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1fluid__dynamics_1_1_free_surface_indication_inner.html">   46</a></span>&#160;        <span class="keyword">class </span><a class="code" href="class_s_p_h_1_1fluid__dynamics_1_1_free_surface_indication_inner.html">FreeSurfaceIndicationInner</a></div><div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;            : <span class="keyword">public</span> <a class="code" href="class_s_p_h_1_1_interaction_dynamics_with_update.html">InteractionDynamicsWithUpdate</a>,</div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;              <span class="keyword">public</span> <a class="code" href="class_s_p_h_1_1_data_delegate_inner.html">FluidDataInner</a></div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;        {</div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;        <span class="keyword">public</span>:</div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;            <span class="keyword">explicit</span> <a class="code" href="class_s_p_h_1_1fluid__dynamics_1_1_free_surface_indication_inner.html">FreeSurfaceIndicationInner</a>(<a class="code" href="class_s_p_h_1_1_base_body_relation_inner.html">BaseBodyRelationInner</a> &amp;inner_relation, Real thereshold = 0.75);</div><div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;            <span class="keyword">virtual</span> ~<a class="code" href="class_s_p_h_1_1fluid__dynamics_1_1_free_surface_indication_inner.html">FreeSurfaceIndicationInner</a>(){};</div><div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;</div><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;        <span class="keyword">protected</span>:</div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;            Real thereshold_by_dimensions_;</div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;            <a class="code" href="class_std_large_vec_3_01_real_01_4.html">StdLargeVec&lt;Real&gt;</a> &amp;Vol_;</div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;            StdLargeVec&lt;int&gt; &amp;surface_indicator_;</div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;            <a class="code" href="class_std_large_vec_3_01_real_01_4.html">StdLargeVec&lt;Real&gt;</a> pos_div_;</div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;            Real smoothing_length_;</div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;</div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;            <span class="keyword">virtual</span> <span class="keywordtype">void</span> Interaction(<span class="keywordtype">size_t</span> index_i, Real dt = 0.0) <span class="keyword">override</span>;</div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;            <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="class_s_p_h_1_1fluid__dynamics_1_1_free_surface_indication_inner.html#a75cad5efe05736fec2695f603216e794">Update</a>(<span class="keywordtype">size_t</span> index_i, Real dt = 0.0) <span class="keyword">override</span>;</div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;        };</div><div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;</div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;        <span class="keyword">template</span> &lt;<span class="keyword">class</span> FreeSurfaceIdentification&gt;</div><div class="line"><a name="l00070"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1fluid__dynamics_1_1_spatial_temporal_free_surface_identification.html">   70</a></span>&#160;        <span class="keyword">class </span><a class="code" href="class_s_p_h_1_1fluid__dynamics_1_1_spatial_temporal_free_surface_identification.html">SpatialTemporalFreeSurfaceIdentification</a> : <span class="keyword">public</span> <a class="code" href="class_free_surface_identification.html">FreeSurfaceIdentification</a></div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;        {</div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;        <span class="keyword">public</span>:</div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;            <span class="keyword">template</span> &lt;<span class="keyword">typename</span>... ConstructorArgs&gt;</div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;            <span class="keyword">explicit</span> <a class="code" href="class_s_p_h_1_1fluid__dynamics_1_1_spatial_temporal_free_surface_identification.html">SpatialTemporalFreeSurfaceIdentification</a>(ConstructorArgs &amp;&amp;...args);</div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;            <span class="keyword">virtual</span> ~<a class="code" href="class_s_p_h_1_1fluid__dynamics_1_1_spatial_temporal_free_surface_identification.html">SpatialTemporalFreeSurfaceIdentification</a>(){};</div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;</div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;        <span class="keyword">protected</span>:</div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;            StdLargeVec&lt;int&gt; previous_surface_indicator_;</div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;</div><div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;            <span class="keyword">virtual</span> <span class="keywordtype">void</span> Interaction(<span class="keywordtype">size_t</span> index_i, Real dt = 0.0) <span class="keyword">override</span>;</div><div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;            <span class="keyword">virtual</span> <span class="keywordtype">void</span> Update(<span class="keywordtype">size_t</span> index_i, Real dt = 0.0) <span class="keyword">override</span>;</div><div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;</div><div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;            <span class="keywordtype">void</span> checkNearPreviousFreeSurface(<span class="keywordtype">size_t</span> index_i);</div><div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;        };</div><div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;        <span class="keyword">using</span> <a class="code" href="class_s_p_h_1_1fluid__dynamics_1_1_spatial_temporal_free_surface_identification.html">SpatialTemporalFreeSurfaceIdentificationInner</a> =</div><div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;            <a class="code" href="class_s_p_h_1_1fluid__dynamics_1_1_spatial_temporal_free_surface_identification.html">SpatialTemporalFreeSurfaceIdentification&lt;FreeSurfaceIndicationInner&gt;</a>;</div><div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;</div><div class="line"><a name="l00092"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1fluid__dynamics_1_1_density_summation_free_surface_inner.html">   92</a></span>&#160;        <span class="keyword">class </span><a class="code" href="class_s_p_h_1_1fluid__dynamics_1_1_density_summation_free_surface_inner.html">DensitySummationFreeSurfaceInner</a> : <span class="keyword">public</span> <a class="code" href="class_s_p_h_1_1fluid__dynamics_1_1_density_summation_inner.html">DensitySummationInner</a></div><div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;        {</div><div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;        <span class="keyword">public</span>:</div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;            <span class="keyword">explicit</span> <a class="code" href="class_s_p_h_1_1fluid__dynamics_1_1_density_summation_free_surface_inner.html">DensitySummationFreeSurfaceInner</a>(<a class="code" href="class_s_p_h_1_1_base_body_relation_inner.html">BaseBodyRelationInner</a> &amp;inner_relation)</div><div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;                : <a class="code" href="class_s_p_h_1_1fluid__dynamics_1_1_density_summation_inner.html">DensitySummationInner</a>(inner_relation){};</div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;            <span class="keyword">virtual</span> ~<a class="code" href="class_s_p_h_1_1fluid__dynamics_1_1_density_summation_free_surface_inner.html">DensitySummationFreeSurfaceInner</a>(){};</div><div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;</div><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;        <span class="keyword">protected</span>:</div><div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;            <span class="keyword">virtual</span> Real ReinitializedDensity(Real rho_sum, Real rho_0, Real rho_n)<span class="keyword"> override</span></div><div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;<span class="keyword">            </span>{</div><div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;                <span class="keywordflow">return</span> rho_sum + SMAX(0.0, (rho_n - rho_sum)) * rho_0 / rho_n;</div><div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;            };</div><div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;        };</div><div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;</div><div class="line"><a name="l00110"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1fluid__dynamics_1_1_density_summation_free_stream_inner.html">  110</a></span>&#160;        <span class="keyword">class </span><a class="code" href="class_s_p_h_1_1fluid__dynamics_1_1_density_summation_free_stream_inner.html">DensitySummationFreeStreamInner</a> : <span class="keyword">public</span> <a class="code" href="class_s_p_h_1_1fluid__dynamics_1_1_density_summation_free_surface_inner.html">DensitySummationFreeSurfaceInner</a></div><div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;        {</div><div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;        <span class="keyword">public</span>:</div><div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;            <span class="keyword">explicit</span> <a class="code" href="class_s_p_h_1_1fluid__dynamics_1_1_density_summation_free_stream_inner.html">DensitySummationFreeStreamInner</a>(<a class="code" href="class_s_p_h_1_1_base_body_relation_inner.html">BaseBodyRelationInner</a> &amp;inner_relation)</div><div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;                : <a class="code" href="class_s_p_h_1_1fluid__dynamics_1_1_density_summation_free_surface_inner.html">DensitySummationFreeSurfaceInner</a>(inner_relation),</div><div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;                  surface_indicator_(*particles_-&gt;getVariableByName&lt;<span class="keywordtype">int</span>&gt;(<span class="stringliteral">&quot;SurfaceIndicator&quot;</span>)){};</div><div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;            <span class="keyword">virtual</span> ~<a class="code" href="class_s_p_h_1_1fluid__dynamics_1_1_density_summation_free_stream_inner.html">DensitySummationFreeStreamInner</a>(){};</div><div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;</div><div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;        <span class="keyword">protected</span>:</div><div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;            StdLargeVec&lt;int&gt; &amp;surface_indicator_;</div><div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;            <span class="keyword">virtual</span> <span class="keywordtype">void</span> Update(<span class="keywordtype">size_t</span> index_i, Real dt = 0.0) <span class="keyword">override</span>;</div><div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;            <span class="keywordtype">bool</span> isNearSurface(<span class="keywordtype">size_t</span> index_i);</div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;        };</div><div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;</div><div class="line"><a name="l00129"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1fluid__dynamics_1_1_free_stream_boundary_velocity_correction.html">  129</a></span>&#160;        <span class="keyword">class </span><a class="code" href="class_s_p_h_1_1fluid__dynamics_1_1_free_stream_boundary_velocity_correction.html">FreeStreamBoundaryVelocityCorrection</a> : <span class="keyword">public</span> <a class="code" href="class_s_p_h_1_1_particle_dynamics_simple.html">ParticleDynamicsSimple</a>, <span class="keyword">public</span> <a class="code" href="class_s_p_h_1_1_data_delegate_inner.html">FluidDataInner</a></div><div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;        {</div><div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;        <span class="keyword">public</span>:</div><div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;            <span class="keyword">explicit</span> <a class="code" href="class_s_p_h_1_1fluid__dynamics_1_1_free_stream_boundary_velocity_correction.html">FreeStreamBoundaryVelocityCorrection</a>(<a class="code" href="class_s_p_h_1_1_base_body_relation_inner.html">BaseBodyRelationInner</a> &amp;inner_relation)</div><div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;                : <a class="code" href="class_s_p_h_1_1_particle_dynamics_simple.html">ParticleDynamicsSimple</a>(*inner_relation.sph_body_),</div><div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;                  <a class="code" href="class_s_p_h_1_1_data_delegate_inner.html">FluidDataInner</a>(inner_relation), u_ref_(1.0), t_ref_(2.0),</div><div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;                  rho_ref_(material_-&gt;ReferenceDensity()), rho_sum(particles_-&gt;rho_sum_),</div><div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;                  vel_(particles_-&gt;vel_), acc_(particles_-&gt;acc_),</div><div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;                  surface_indicator_(*particles_-&gt;getVariableByName&lt;<span class="keywordtype">int</span>&gt;(<span class="stringliteral">&quot;SurfaceIndicator&quot;</span>)){};</div><div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;            <span class="keyword">virtual</span> ~<a class="code" href="class_s_p_h_1_1fluid__dynamics_1_1_free_stream_boundary_velocity_correction.html">FreeStreamBoundaryVelocityCorrection</a>(){};</div><div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;</div><div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;        <span class="keyword">protected</span>:</div><div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;            Real u_ref_, t_ref_, rho_ref_;</div><div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;            <a class="code" href="class_std_large_vec_3_01_real_01_4.html">StdLargeVec&lt;Real&gt;</a> &amp;rho_sum;</div><div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;            <a class="code" href="class_std_large_vec_3_01_vecd_01_4.html">StdLargeVec&lt;Vecd&gt;</a> &amp;vel_, &amp;acc_;</div><div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;            StdLargeVec&lt;int&gt; &amp;surface_indicator_;</div><div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;</div><div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;            <span class="keyword">virtual</span> <span class="keywordtype">void</span> Update(<span class="keywordtype">size_t</span> index_i, Real dt = 0.0) <span class="keyword">override</span>;</div><div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;        };</div><div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;</div><div class="line"><a name="l00153"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1fluid__dynamics_1_1_free_surface_probe_on_fluid_body.html">  153</a></span>&#160;        <span class="keyword">class </span><a class="code" href="class_s_p_h_1_1fluid__dynamics_1_1_free_surface_probe_on_fluid_body.html">FreeSurfaceProbeOnFluidBody</a> : <span class="keyword">public</span> <a class="code" href="class_s_p_h_1_1_part_dynamics_by_cell_reduce.html">PartDynamicsByCellReduce</a>&lt;Real, ReduceMax&gt;,</div><div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;                                            <span class="keyword">public</span> <a class="code" href="class_s_p_h_1_1_data_delegate_simple.html">FluidDataSimple</a></div><div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;        {</div><div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;        <span class="keyword">public</span>:</div><div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;            <a class="code" href="class_s_p_h_1_1fluid__dynamics_1_1_free_surface_probe_on_fluid_body.html">FreeSurfaceProbeOnFluidBody</a>(<a class="code" href="class_s_p_h_1_1_fluid_body.html">FluidBody</a> &amp;fluid_body, <a class="code" href="class_s_p_h_1_1_body_part_by_cell.html">BodyPartByCell</a> &amp;body_part)</div><div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;                : <a class="code" href="class_s_p_h_1_1_part_dynamics_by_cell_reduce.html">PartDynamicsByCellReduce&lt;Real, ReduceMax&gt;</a>(fluid_body, body_part), <a class="code" href="class_s_p_h_1_1_data_delegate_simple.html">FluidDataSimple</a>(fluid_body),</div><div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;                  pos_(particles_-&gt;pos_)</div><div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;            {</div><div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;                quantity_name_ = body_part.BodyPartName() + <span class="stringliteral">&quot;FreeSurface&quot;</span>;</div><div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;                initial_reference_ = 0.0;</div><div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;            }</div><div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;            <span class="keyword">virtual</span> ~<a class="code" href="class_s_p_h_1_1fluid__dynamics_1_1_free_surface_probe_on_fluid_body.html">FreeSurfaceProbeOnFluidBody</a>(){};</div><div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;</div><div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;        <span class="keyword">protected</span>:</div><div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;            <a class="code" href="class_std_large_vec_3_01_vecd_01_4.html">StdLargeVec&lt;Vecd&gt;</a> &amp;pos_;</div><div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;            <span class="keyword">virtual</span> <span class="keywordtype">void</span> SetupReduce()<span class="keyword"> override</span>{};</div><div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;            <span class="keyword">virtual</span> Real ReduceFunction(<span class="keywordtype">size_t</span> index_i, Real dt = 0.0)<span class="keyword"> override </span>{ <span class="keywordflow">return</span> pos_[index_i][1]; };</div><div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;        };</div><div class="line"><a name="l00175"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1fluid__dynamics_1_1_color_function_gradient_inner.html">  175</a></span>&#160;        <span class="keyword">class </span><a class="code" href="class_s_p_h_1_1fluid__dynamics_1_1_color_function_gradient_inner.html">ColorFunctionGradientInner</a> : <span class="keyword">public</span> <a class="code" href="class_s_p_h_1_1_interaction_dynamics.html">InteractionDynamics</a>, <span class="keyword">public</span> <a class="code" href="class_s_p_h_1_1_data_delegate_inner.html">FluidDataInner</a></div><div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;        {</div><div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;        <span class="keyword">public</span>:</div><div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;            <span class="keyword">explicit</span> <a class="code" href="class_s_p_h_1_1fluid__dynamics_1_1_color_function_gradient_inner.html">ColorFunctionGradientInner</a>(<a class="code" href="class_s_p_h_1_1_base_body_relation_inner.html">BaseBodyRelationInner</a> &amp;inner_relation);</div><div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;            <span class="keyword">virtual</span> ~<a class="code" href="class_s_p_h_1_1fluid__dynamics_1_1_color_function_gradient_inner.html">ColorFunctionGradientInner</a>(){};</div><div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;</div><div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;        <span class="keyword">protected</span>:</div><div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;            Real thereshold_by_dimensions_;</div><div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;            <a class="code" href="class_std_large_vec_3_01_real_01_4.html">StdLargeVec&lt;Real&gt;</a> &amp;Vol_;</div><div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;            StdLargeVec&lt;int&gt; &amp;surface_indicator_;</div><div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;            <a class="code" href="class_std_large_vec_3_01_vecd_01_4.html">StdLargeVec&lt;Vecd&gt;</a> color_grad_;</div><div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;            <a class="code" href="class_std_large_vec_3_01_vecd_01_4.html">StdLargeVec&lt;Vecd&gt;</a> surface_norm_;</div><div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;            <a class="code" href="class_std_large_vec_3_01_real_01_4.html">StdLargeVec&lt;Real&gt;</a> &amp;pos_div_;</div><div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;</div><div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;            <span class="keyword">virtual</span> <span class="keywordtype">void</span> Interaction(<span class="keywordtype">size_t</span> index_i, Real dt = 0.0) <span class="keyword">override</span>;</div><div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;        };</div><div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;</div><div class="line"><a name="l00196"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1fluid__dynamics_1_1_color_function_gradient_interplation_inner.html">  196</a></span>&#160;        <span class="keyword">class </span><a class="code" href="class_s_p_h_1_1fluid__dynamics_1_1_color_function_gradient_interplation_inner.html">ColorFunctionGradientInterplationInner</a> : <span class="keyword">public</span> <a class="code" href="class_s_p_h_1_1_interaction_dynamics.html">InteractionDynamics</a>, <span class="keyword">public</span> <a class="code" href="class_s_p_h_1_1_data_delegate_inner.html">FluidDataInner</a></div><div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;        {</div><div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;        <span class="keyword">public</span>:</div><div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;            <span class="keyword">explicit</span> <a class="code" href="class_s_p_h_1_1fluid__dynamics_1_1_color_function_gradient_interplation_inner.html">ColorFunctionGradientInterplationInner</a>(<a class="code" href="class_s_p_h_1_1_base_body_relation_inner.html">BaseBodyRelationInner</a> &amp;inner_relation);</div><div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;            <span class="keyword">virtual</span> ~<a class="code" href="class_s_p_h_1_1fluid__dynamics_1_1_color_function_gradient_interplation_inner.html">ColorFunctionGradientInterplationInner</a>(){};</div><div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;</div><div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;        <span class="keyword">protected</span>:</div><div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;            Real thereshold_by_dimensions_;</div><div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;            <a class="code" href="class_std_large_vec_3_01_real_01_4.html">StdLargeVec&lt;Real&gt;</a> &amp;Vol_;</div><div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;            StdLargeVec&lt;int&gt; &amp;surface_indicator_;</div><div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;            <a class="code" href="class_std_large_vec_3_01_vecd_01_4.html">StdLargeVec&lt;Vecd&gt;</a> &amp;color_grad_;</div><div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;            <a class="code" href="class_std_large_vec_3_01_vecd_01_4.html">StdLargeVec&lt;Vecd&gt;</a> &amp;surface_norm_;</div><div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;            <a class="code" href="class_std_large_vec_3_01_real_01_4.html">StdLargeVec&lt;Real&gt;</a> &amp;pos_div_;</div><div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;</div><div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;            <span class="keyword">virtual</span> <span class="keywordtype">void</span> Interaction(<span class="keywordtype">size_t</span> index_i, Real dt = 0.0) <span class="keyword">override</span>;</div><div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;        };</div><div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;</div><div class="line"><a name="l00217"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1fluid__dynamics_1_1_surface_tension_acceleration_inner.html">  217</a></span>&#160; 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       };</div><div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;    }</div><div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;}</div><div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;<span class="preprocessor">#endif //FLUID_SURFACE_INNER_H</span></div><div class="ttc" id="class_std_large_vec_3_01_real_01_4_html"><div class="ttname"><a href="class_std_large_vec_3_01_real_01_4.html">StdLargeVec&lt; Real &gt;</a></div></div>
<div class="ttc" id="class_s_p_h_1_1_fluid_body_html"><div class="ttname"><a href="class_s_p_h_1_1_fluid_body.html">SPH::FluidBody</a></div><div class="ttdoc">Fluid body uses smoothing length to particle spacing 1.3 and carry out particle sorting every 100 ite...</div><div class="ttdef"><b>Definition:</b> fluid_body.h:43</div></div>
<div class="ttc" id="class_s_p_h_1_1fluid__dynamics_1_1_free_surface_indication_inner_html_a75cad5efe05736fec2695f603216e794"><div class="ttname"><a href="class_s_p_h_1_1fluid__dynamics_1_1_free_surface_indication_inner.html#a75cad5efe05736fec2695f603216e794">SPH::fluid_dynamics::FreeSurfaceIndicationInner::Update</a></div><div class="ttdeci">virtual void Update(size_t index_i, Real dt=0.0) override</div><div class="ttdef"><b>Definition:</b> fluid_surface_inner.cpp:37</div></div>
<div class="ttc" id="class_s_p_h_1_1fluid__dynamics_1_1_density_summation_free_stream_inner_html"><div class="ttname"><a href="class_s_p_h_1_1fluid__dynamics_1_1_density_summation_free_stream_inner.html">SPH::fluid_dynamics::DensitySummationFreeStreamInner</a></div><div class="ttdoc">The density is smoothed if the particle is near fluid surface. </div><div class="ttdef"><b>Definition:</b> fluid_surface_inner.h:110</div></div>
<div class="ttc" id="class_s_p_h_1_1_data_delegate_inner_html"><div class="ttname"><a href="class_s_p_h_1_1_data_delegate_inner.html">SPH::DataDelegateInner</a></div><div class="ttdoc">prepare data for inner particle dynamics </div><div class="ttdef"><b>Definition:</b> base_particle_dynamics.h:216</div></div>
<div class="ttc" id="class_s_p_h_1_1_body_part_by_cell_html"><div class="ttname"><a href="class_s_p_h_1_1_body_part_by_cell.html">SPH::BodyPartByCell</a></div><div class="ttdoc">A body part with a collection of cell lists. </div><div class="ttdef"><b>Definition:</b> base_body_part.h:100</div></div>
<div class="ttc" id="class_s_p_h_1_1fluid__dynamics_1_1_color_function_gradient_inner_html"><div class="ttname"><a href="class_s_p_h_1_1fluid__dynamics_1_1_color_function_gradient_inner.html">SPH::fluid_dynamics::ColorFunctionGradientInner</a></div><div class="ttdoc">indicate the particles near the interface of a fluid-fluid interaction and computing norm ...</div><div class="ttdef"><b>Definition:</b> fluid_surface_inner.h:175</div></div>
<div class="ttc" id="class_s_p_h_1_1_particle_dynamics_simple_html"><div class="ttname"><a href="class_s_p_h_1_1_particle_dynamics_simple.html">SPH::ParticleDynamicsSimple</a></div><div class="ttdoc">Simple particle dynamics without considering particle interaction. </div><div class="ttdef"><b>Definition:</b> particle_dynamics_algorithms.h:48</div></div>
<div class="ttc" id="class_s_p_h_1_1_part_dynamics_by_cell_reduce_html"><div class="ttname"><a href="class_s_p_h_1_1_part_dynamics_by_cell_reduce.html">SPH::PartDynamicsByCellReduce</a></div><div class="ttdoc">Abstract class for reduce operation in a Eulerian constrain region. </div><div class="ttdef"><b>Definition:</b> particle_dynamics_bodypart.h:162</div></div>
<div class="ttc" id="class_s_p_h_1_1fluid__dynamics_1_1_free_surface_indication_inner_html"><div class="ttname"><a href="class_s_p_h_1_1fluid__dynamics_1_1_free_surface_indication_inner.html">SPH::fluid_dynamics::FreeSurfaceIndicationInner</a></div><div class="ttdoc">indicate the particles near the free surface of a fluid body. Note that, SPHinXsys does not require t...</div><div class="ttdef"><b>Definition:</b> fluid_surface_inner.h:46</div></div>
<div class="ttc" id="class_s_p_h_1_1fluid__dynamics_1_1_surface_tension_acceleration_inner_html_a8dda9cd261b689dac66f4b177a4be704"><div class="ttname"><a href="class_s_p_h_1_1fluid__dynamics_1_1_surface_tension_acceleration_inner.html#a8dda9cd261b689dac66f4b177a4be704">SPH::fluid_dynamics::SurfaceTensionAccelerationInner::Interaction</a></div><div class="ttdeci">virtual void Interaction(size_t index_i, Real dt=0.0) override</div><div class="ttdef"><b>Definition:</b> fluid_surface_inner.cpp:177</div></div>
<div class="ttc" id="class_std_large_vec_3_01_vecd_01_4_html"><div class="ttname"><a href="class_std_large_vec_3_01_vecd_01_4.html">StdLargeVec&lt; Vecd &gt;</a></div></div>
<div class="ttc" id="class_s_p_h_1_1fluid__dynamics_1_1_spatial_temporal_free_surface_identification_html"><div class="ttname"><a href="class_s_p_h_1_1fluid__dynamics_1_1_spatial_temporal_free_surface_identification.html">SPH::fluid_dynamics::SpatialTemporalFreeSurfaceIdentification</a></div><div class="ttdoc">using the spatial-temporal method to indicate the surface particles to avoid mis-judgement. </div><div class="ttdef"><b>Definition:</b> fluid_surface_inner.h:70</div></div>
<div class="ttc" id="class_s_p_h_1_1fluid__dynamics_1_1_density_summation_inner_html"><div class="ttname"><a href="class_s_p_h_1_1fluid__dynamics_1_1_density_summation_inner.html">SPH::fluid_dynamics::DensitySummationInner</a></div><div class="ttdoc">computing density by summation </div><div class="ttdef"><b>Definition:</b> fluid_dynamics_inner.h:68</div></div>
<div class="ttc" id="class_s_p_h_1_1fluid__dynamics_1_1_density_summation_free_surface_inner_html"><div class="ttname"><a href="class_s_p_h_1_1fluid__dynamics_1_1_density_summation_free_surface_inner.html">SPH::fluid_dynamics::DensitySummationFreeSurfaceInner</a></div><div class="ttdoc">computing density by summation with a re-normalization for free surface flows </div><div class="ttdef"><b>Definition:</b> fluid_surface_inner.h:92</div></div>
<div class="ttc" id="class_free_surface_identification_html"><div class="ttname"><a href="class_free_surface_identification.html">FreeSurfaceIdentification</a></div></div>
<div class="ttc" id="fluid__dynamics__inner_8hpp_html"><div class="ttname"><a href="fluid__dynamics__inner_8hpp.html">fluid_dynamics_inner.hpp</a></div></div>
<div class="ttc" id="class_s_p_h_1_1_interaction_dynamics_html"><div class="ttname"><a href="class_s_p_h_1_1_interaction_dynamics.html">SPH::InteractionDynamics</a></div><div class="ttdoc">This is the class for particle interaction with other particles. </div><div class="ttdef"><b>Definition:</b> particle_dynamics_algorithms.h:115</div></div>
<div class="ttc" id="class_s_p_h_1_1fluid__dynamics_1_1_free_surface_probe_on_fluid_body_html"><div class="ttname"><a href="class_s_p_h_1_1fluid__dynamics_1_1_free_surface_probe_on_fluid_body.html">SPH::fluid_dynamics::FreeSurfaceProbeOnFluidBody</a></div><div class="ttdoc">Probe the free surface profile for a fluid body part by reduced operation. </div><div class="ttdef"><b>Definition:</b> fluid_surface_inner.h:153</div></div>
<div class="ttc" id="class_s_p_h_1_1_interaction_dynamics_with_update_html"><div class="ttname"><a href="class_s_p_h_1_1_interaction_dynamics_with_update.html">SPH::InteractionDynamicsWithUpdate</a></div><div class="ttdoc">This class includes an interaction and a update steps. </div><div class="ttdef"><b>Definition:</b> particle_dynamics_algorithms.h:160</div></div>
<div class="ttc" id="class_s_p_h_1_1_base_body_relation_inner_html"><div class="ttname"><a href="class_s_p_h_1_1_base_body_relation_inner.html">SPH::BaseBodyRelationInner</a></div><div class="ttdoc">The abstract relation within a SPH body. </div><div class="ttdef"><b>Definition:</b> base_body_relation.h:117</div></div>
<div class="ttc" id="class_s_p_h_1_1_data_delegate_simple_html"><div class="ttname"><a href="class_s_p_h_1_1_data_delegate_simple.html">SPH::DataDelegateSimple</a></div><div class="ttdoc">prepare data for simple particle dynamics. </div><div class="ttdef"><b>Definition:</b> base_particle_dynamics.h:185</div></div>
<div class="ttc" id="class_s_p_h_1_1fluid__dynamics_1_1_surface_tension_acceleration_inner_html"><div class="ttname"><a href="class_s_p_h_1_1fluid__dynamics_1_1_surface_tension_acceleration_inner.html">SPH::fluid_dynamics::SurfaceTensionAccelerationInner</a></div><div class="ttdoc">the viscous force induced acceleration </div><div class="ttdef"><b>Definition:</b> fluid_surface_inner.h:217</div></div>
<div class="ttc" id="class_s_p_h_1_1fluid__dynamics_1_1_color_function_gradient_interplation_inner_html"><div class="ttname"><a href="class_s_p_h_1_1fluid__dynamics_1_1_color_function_gradient_interplation_inner.html">SPH::fluid_dynamics::ColorFunctionGradientInterplationInner</a></div><div class="ttdoc">the viscous force induced acceleration </div><div class="ttdef"><b>Definition:</b> fluid_surface_inner.h:196</div></div>
<div class="ttc" id="class_s_p_h_1_1fluid__dynamics_1_1_free_stream_boundary_velocity_correction_html"><div class="ttname"><a href="class_s_p_h_1_1fluid__dynamics_1_1_free_stream_boundary_velocity_correction.html">SPH::fluid_dynamics::FreeStreamBoundaryVelocityCorrection</a></div><div class="ttdoc">this function is applied to freestream flows </div><div class="ttdef"><b>Definition:</b> fluid_surface_inner.h:129</div></div>
<div class="ttc" id="namespace_s_p_h_html"><div class="ttname"><a href="namespace_s_p_h.html">SPH</a></div><div class="ttdef"><b>Definition:</b> solid_body_supplementary.cpp:9</div></div>
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